- #1
HydroGuy
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I'm investigating the power available in a free flowing river. I'm attempting to capture this power with a cross-axis (wind turbine style) turbine.
The equation I have for available power is: P = 0.5*m*A*v^3
with m=mass, A=area swept by blades, v=horizontal (into the turbine) velocity of the river
This is the total power available, correct?
Is the area A the total area swept by the blades (ie pi*r^2) or would it be the area of just the blades themselves?
Likewise, does anyone have equations relating to the operation and/or efficiency of a turbine in water? I'm looking to determine maximum efficiency, and torque and angular velocity as related to water velocity. Any help would be greatly appreciated.
I'm an electrical engineer by education, so most of this stuff is new to me...
The equation I have for available power is: P = 0.5*m*A*v^3
with m=mass, A=area swept by blades, v=horizontal (into the turbine) velocity of the river
This is the total power available, correct?
Is the area A the total area swept by the blades (ie pi*r^2) or would it be the area of just the blades themselves?
Likewise, does anyone have equations relating to the operation and/or efficiency of a turbine in water? I'm looking to determine maximum efficiency, and torque and angular velocity as related to water velocity. Any help would be greatly appreciated.
I'm an electrical engineer by education, so most of this stuff is new to me...